The store has long since closed (viaScreenrant).
But originally, the E!
reality show filmed there, in large part because the family was trying to gain exposure for the store.

A lot has changed since the Kardashian sisters hung clothes on racks.
Now, they are among the most famous people on Earth.
her momager, told her daughters that this would in fact be the concept for their now-iconic reality series.

It’s all you have to do'" (viaET Online).
Then we were just like, ‘OK, we’re already here.
We’ll just do it.'"